Hpr 115 round 2

[Chrisg81983]

I am doing a second hpr 115 carbon kevlar version. Setup will be lehner 2250/4's 2959kv on 7&8 cell in wye configuration. Esc's being used will be the yge 160hv's with additional cap banks. It will also be built using hpr drives and rudder. Thanks for looking and I hope you enjoy.

[Chrisg81983]

Here are some pics

[Chrisg81983]

For this build I made my own lipo trays and motor mounts using hpr products at a basic template. I will also be doing a cf inlay in hull and hatch for extra strength.

[Chrisg81983]

Some more pics

[bracka69]

Hey buddy it's been a while we haven't chatted. She's looking good my friend.

[Chrisg81983]

Hey joshua how are you ? Thanks for the compliments ......

[bracka69]

Hey man I've been good. I see where HPR has opened back up for business.

[iridebikes247]

You think she'll be ready for tomorrow? lol looks good chris, the inlay is sick its amazing what the epoxy + Keith's fabric did for an already stiff boat.

[srislash]

Hey Chris,just can't stop eh? 2900kv and 7-8s.... man O' man

[MrEvoMan]

Is the only place to get the HPR hulls is from Sweden?

[Chrisg81983]

Shawn it will be a little over 1700 kv in wye on 7 & 8 s and 2959 kv on 4 & 5 s in delta.


@ mrevoman yes the only place to get a real hpr is from hanspeter or manuel unless u buy one second hand from someone.

[Chrisg81983]

Ok I got the drives and rudder mounted for this build I made all my own mounts and lipo system. The hardware was installed the same way I did my other hpr's. Basically using an ink pad to stamp the mounting flanges on to a piece of paper then cut out exact. Next I use 3m super 77 to adhere patterns to hull.

[Mike Caruso]

Wow Chris sweet job! What MPH are you setting it up for? Oval racing? SAW?
Mike

[Chrisg81983]

Hey mike thanks for the kind words. The build is for saw running but will mainly be used for sport running. Speeds around 110-120 mph will be the goal with this boat.

[nata2run]

Hey Chris, as usual very nice and clean build. I always end up saying the same about your work lol. Those are definetely some serious speed goals! I sooooo wish I had the waters over here to even try.

[Chrisg81983]

Thanks kent..... first u need to get some b@!!$ first then the water. Call me when u get up.

[Mike Caruso]

Hey mike thanks for the kind words. The build is for saw running but will mainly be used for sport running. Speeds around 110-120 mph will be the goal with this boat.

Chris,
No Kidding!!! WOW that's rocking.... I have been saving $$$$ and what you are building is just what I am looking to build. Something that will just hit 100 mph as I have to work up to that speed and to have more left if perfect in my eyes. Any idea about how long to get a hull made?
Thanks again,
Mike

[keithbradley]

Looking good Chris...and should run great!

I'm always a little shy to run these in wye the way you do...in my experience the actual kv when ran in wye is not always what you would think it would be. On paper, this one should be a killer setup though.

EDIT: I guess I should say that I'm shy to ORDER them that way...running them in wye is not a problem.

[Mike Caruso]

Hi Keith,

SAW Flint, MI first weekend in Oct I am coming up to learn and I hope to meet you up there.

Mike

[Chrisg81983]

Hey keith how are you ??? I still cant figure out why u had such a difference between the two 2240/5 's. When I ran them both of my hydra ices and eagle tree confirmed that the two motors were never over 113 rpm apart. On a normal they were within 60 rpm's of one another. If possible can you send me the logging file and I will do the same as it will be interesting to compare.

Mike I am not sure about the wait time for an hpr, but whatever it definitely worth the wait nomatter one week or three weeks. If you are serious about getting one I would talk to manuel about it. A pair of TP 4050 L 2350kv will get u to a 100 mph if set up correctly. You can also get by using the t180 as they perform very well with that setup. So 100 mph can be done with a relatively cheap setup.

[Livewire121]

Lookin good Chris!!:popcorn2:

[keithbradley]

Hey keith how are you ??? I still cant figure out why u had such a difference between the two 2240/5 's. When I ran them both of my hydra ices and eagle tree confirmed that the two motors were never over 113 rpm apart. On a normal they were within 60 rpm's of one another. If possible can you send me the logging file and I will do the same as it will be interesting to compare.

Mike I am not sure about the wait time for an hpr, but whatever it definitely worth the wait nomatter one week or three weeks. If you are serious about getting one I would talk to manuel about it. A pair of TP 4050 L 2350kv will get u to a 100 mph if set up correctly. You can also get by using the t180 as they perform very well with that setup. So 100 mph can be done with a relatively cheap setup.

I wasn't referring to comparing two of the same motors Chris. What I meant was this: Lehner motors are rated loaded. There is a bit of a correction factor assumed for RPM drop under a given load. So, a 1600kv Lehner might actually turn 1650kv unloaded (just making up numbers). I believe that the difference between a loaded and unloaded motor's kv will be greater with the higher kv models. For example, a motor that turns 500kv unloaded might turn 480 loaded. A motor that turns 3000kv unloaded might run 2400kv (again, I'm just pulling numbers out of the air here to demonstrate a point).

So... when comparing a D to Y wind, the factor of 1.73 can be used to determine kv. However, with a motor that is rated at a loaded RPM, the correction factor will be greater in D configuration than it will in Y configuration, meaning that the math may not be linear. Essentially what I am saying is that I don't have 100% faith when ordering a motor that the final kv in wye will be 1.73 of what is listed on the site. Your motors should be ~1710kv right? Have you found that they are consistent in this? I have only ran a few pair of Lehners in wye, but they have been a bit higher in kv than what I expected.

[Jason4636]

Hey Chris looking great, sorry I haven't seen this thread before. been busy moving.

[Mike Caruso]

I wasn't referring to comparing two of the same motors Chris. What I meant was this: Lehner motors are rated loaded. There is a bit of a correction factor assumed for RPM drop under a given load. So, a 1600kv Lehner might actually turn 1650kv unloaded (just making up numbers). I believe that the difference between a loaded and unloaded motor's kv will be greater with the higher kv models. For example, a motor that turns 500kv unloaded might turn 480 loaded. A motor that turns 3000kv unloaded might run 2400kv (again, I'm just pulling numbers out of the air here to demonstrate a point).

So... when comparing a D to Y wind, the factor of 1.73 can be used to determine kv. However, with a motor that is rated at a loaded RPM, the correction factor will be greater in D configuration than it will in Y configuration, meaning that the math may not be linear. Essentially what I am saying is that I don't have 100% faith when ordering a motor that the final kv in wye will be 1.73 of what is listed on the site. Your motors should be ~1710kv right? Have you found that they are consistent in this? I have only ran a few pair of Lehners in wye, but they have been a bit higher in kv than what I expected.

Great explanation Keith just make sure your working apples to apples.
I have been trapped read that costing me $$$ more than once in my life. I am a little slow some times Ha.
Mike

[Chrisg81983]

Keith what's up I was a little unsure what you meant but got it now. I found they are damn close to what it should be. I think my 3040 are within 50 rpm of what it should be. I will look into it further and let u know.

jason whats up how is your mono doing.

[drwayne]

Another impressive build, Chris.
Are you done yet ?

[Chrisg81983]

Thank doc how are you ? Almost done I hope lol. I will probably be done by end of week

[iridebikes247]

Pics do the boat no justice. Recently had chris help rebuild a mystic 138 with me his build quality is second to none. Anyone wanting a 100mph boat that survives even the worst of crashes this who you go to lol.

[Chrisg81983]

Pics do the boat no justice. Recently had chris help rebuild a mystic 138 with me his build quality is second to none. Anyone wanting a 100mph boat that survives even the worst of crashes this who you go to lol.hey thanks mike how are you feeling and by the way I can't wait until we run your 138

[Chrisg81983]

Ok guys been busy but I did manage to get the carbon work all done and motor mounts in. The 2250's came from lehner and are awesome as usual. I am posting pictures in a few min.

[Chrisg81983]

Here are some pics and I also forgot to mention I completed the water inlets and countersunk hatch bolts. More pics to come

[Chrisg81983]

More

[Chrisg81983]

Heres the inlets and hatch bolts

[Chrisg81983]

I also wrapped the stuffing tubes all in carbon while also getting them installed and only tacked in with ca glue need to go over with epoxy.

[Livewire121]

She's coming along very nicely Chris!

[Rocstar]

Off to a great start sir... :popcorn2:

[iridebikes247]

wow that does look sick this thing will be unreal when finished can't wait to see the maiden. the carbon stuffing tubes really dress up the whole transom area its crazy how much of a difference it makes.

[Chrisg81983]

Thanks guys I am very happy how she is coming along. Richard I will get up with u later we need to talk.

[nata2run]

Very Nice Chris!! Finally starting to show your bling :cool2: Hey that tube thing is my trick "almost"

[Chrisg81983]

Ok well decided to put the new style schulze 40.160 more similar to the 161 not old school 160. The only thing is they are a pain to fit in the hull so I had to stack them. Today a made a two tier mount out of cf witch is totally removable if need be. The boat should take her maiden voyage tomorrow. All I need to do are the cooling lines.

[nata2run]

Hey Chris, nothing better than to take a boat for maiden on your b-day "BIG 3-O" :beerchug: "there was no cake symbol" LOL

[Chrisg81983]

Lol thanks bro u know there is no beer for me here lol I will post pics of boat in a lil

[nata2run]

I wasn't going to post some flowery symbol, don't like you that much! LOL, and there was no Cup Cake symbol or lady bug :censored:

[Chrisg81983]

Lol now you are talking

[Chrisg81983]

Here is first batch

[Chrisg81983]

Ok some more

[Cooper]

Here is first batch
Looks good!! What are you using to attach the battery trays? It looks like a black tig weld!! Pigmented epoxy and squeegee ? Just looks good and clean, I think some of my stuff is clean but then I look at yours and some other top builders ,,,,,then my two left hands!?!?! Lol.

[Rocstar]

Nice job Chris! Won't be long now...:thumbup1:

[Chrisg81983]

Thanks rockstar Hey Ralph how are you ??? Thanks for the kind words. I glue the trays in with black aquarium silicone. Tool used to spread it my pointer finger lol. I buy it from petco, but hey bro don't cut your self short bro you build a damn good boat. The thing is what we learn from each other. We really should get together one weekend soon send me your number in a pm.

[Cooper]

Thanks rockstar Hey Ralph how are you ??? Thanks for the kind words. I glue the trays in with black aquarium silicone. Tool used to spread it my pointer finger lol. I buy it from petco, but hey bro don't cut your self short bro you build a damn good boat. The thing is what we learn from each other. We really should get together one weekend soon send me your number in a pm.
Cool! On phone today, will pm ya tonight.

[Chrisg81983]

Cooper just saw your pm. So guys she took her maiden voyage today. We took her out on 7s in wye mode with a 447. Everything went perfect to where we couldn't ask for more. Speeds were in the 90 range will get gps readings some time later this week.

[Chrisg81983]

Here are some pics and 3 new videos are also uploaded to YouTube

[srislash]

Sweet,can't wait for vid :drool:

[iridebikes247]

Here are some more pics from the maiden, was a sick day that boat ran awesome chris.

[Chrisg81983]

Thanks mike and yes it was a kick a$$ day we on for Sunday rite bro. Once again thanks

[rabosi]

Very nice Chris. That's pretty fast collection you have there. Wish I can make it out there when you guys run. It would be nice to witness 100 mph in person.

[Chrisg81983]

Rabosi you are welcomed at any point in time. It would be cool to get together with other people and run. I need to say I am entirely satisfied with this build. Its amazing how stable this 115 is. It runs flawlessly in any water conditions. Even though this is the second one I built and have ran them 100 plus times they will always keep surprising me. Anyone who is debating getting one go for it

[rabosi]

Thanks Chris. I recently picked up a used C5009 (two previous owners) that ManuelW built. I have not had time to try it out but I believe it's set up to run around 70 mph which is fine for me right now. But it will be nice to hit that 100 mph mark someday though I'm well aware the trials and perils involved with that goal. Because of my work rotation I won't have weekends off until October. I will check with you then if you have not shut it down for the season yet.

Rick

[Chrisg81983]

I run all year round it take a lot to freeze my lake I run at. Its 100 feet deep and 3/4 of mile across in each direction. I can also run during the week if need be my work schedule is wacky as well. I have only 1 full weekend and 1 half weekend off a month.

[Cooper]

I'm thinking of one of these for a winter build, they look extremely nice on the water. I think the "v" bottom ride pad verses the flat ride pads makes a huge difference when running at high speeds. Seems that they cut through any little chop better. At 100mph+ a 1/2" wave is huge. I just saw a 119mph pass by someone, yet another rung on the ladder!! Hey how long would it take you to get from downtown NYC? Like Central Park? My wife visits friend there sometimes, might have room for a boat or two to share the back with our wolfhound.

[rabosi]

I run all year round it take a lot to freeze my lake I run at. Its 100 feet deep and 3/4 of mile across in each direction. I can also run during the week if need be my work schedule is wacky as well. I have only 1 full weekend and 1 half weekend off a month.

Hopefully I can make it out some time in October then. Looking forward to seeing those HPRs of yours run.

[iridebikes247]

Its pretty awesome watching chris' boat run but I warn you you'll go home that night and order up everything you can to build something comparable lol. I remember the first time I saw chris' boats run I shook his hand and said thanks for making me broke for the next 6 months lol.

I was thinking of having a meet end of October with the generator and some other stuff. The lake really dies down. Cooper The lake is about an hour from NYC I considered running my mhz in central park as I'm a student in the city I'm not sure how people in NYC will take a 100mph boat blasting by them in row boats.

[Chrisg81983]

We will definitely plan something for october the only thing it will need to be near middle or end of the month. The reason being is I have some pain in the a$$ (kent) coming the first week of october. Lol I need to take him on a tour of the U.S.

[rabosi]

Its pretty awesome watching chris' boat run but I warn you you'll go home that night and order up everything you can to build something comparable lol. I remember the first time I saw chris' boats run I shook his hand and said thanks for making me broke for the next 6 months lol.................

I can imagine. I was intrigued just watching his vids. If you guys do set something up for October, please post the date. I will definitely try to make it.

[Chrisg81983]

You set the date that's good for you we run all the time

[Cooper]

Its pretty awesome watching chris' boat run but I warn you you'll go home that night and order up everything you can to build something comparable lol. I remember the first time I saw chris' boats run I shook his hand and said thanks for making me broke for the next 6 months lol.

I was thinking of having a meet end of October with the generator and some other stuff. The lake really dies down. Cooper The lake is about an hour from NYC I considered running my mhz in central park as I'm a student in the city I'm not sure how people in NYC will take a 100mph boat blasting by them in row boats.
Where, what town? So I can look it up in proximity of other locations I may be at or near. My dad has a house in hazleton, (near Scranton) commute from NYC. I'm about an hour east of that. I'm gonna have to make time for this.

[Chrisg81983]

Its at lake Ronkonkoma or close to town of Smithtown ny

[rabosi]

Hey Cooper, if the October time frame works for you maybe we can all try to meet up at the same time.

[worriedsick4u]

We will definitely plan something for october the only thing it will need to be near middle or end of the month. The reason being is I have some pain in the a$$ (kent) coming the first week of october. Lol I need to take him on a tour of the U.S.
LOL. He needs to see Florida. We'll take him to see the little mouse in Orlando.

[iridebikes247]

man there would be some fast boats on the lake lol. I have plenty of time for October whatever works for you guys all weekends open after october 7th. I believe a guy from jersey was interested also.

Chris I might try 13s to the mystic but I think it makes sense for that to be the last run of the day lol.