J.A.Son Posted September 28, 2014 Share Posted September 28, 2014 (edited) Then you need to look into batteries. If you do the math (volt x kv of the motor) the sweet spot for the WR8 is right around 50k rpms at the motor with the stock gearing. That is the 4000kv motor running on a 3cell which makes for a smoking fast little car! If you want to get the same wheel speed out of a 2200kv combo you will look into 5cell batteries or higher and even then you will need to gear it up a bit. A 5cell on the 2200kv will give you 46,000 rpm at the motor vs the 4000kv on a 3cell giving you 50,000rpms. Does anyone know the numbers/teeth for the input gear- centre shafts & ring gear on the f&r diffs? From what I've worked out (without the numbers for them) the ratio must be something a little less than 2:1, around 32:13..? I'm away from car & bored ;( otherwise I'd get me fingers dirty You've started me off now mike- I'm trying to work out a theoretical pinion-mph guide lol Edited September 28, 2014 by J.A.Son Quote Link to comment Share on other sites More sharing options...
Leo Posted September 28, 2014 Share Posted September 28, 2014 Diff gears are 40t and the pinion gear is 13t. http://www.hpiracing.com/en/part/101215 http://www.hpiracing.com/en/part/101216 Quote Link to comment Share on other sites More sharing options...
Mgozzz Posted September 29, 2014 Share Posted September 29, 2014 (edited) Latest video- For some reason the car doesn't seem as quick at it was the other day. It is still fast regardless but I think the setup is stressing the batteries at this point. I only have a 35c and a 40c 3s pack at my disposal so I'd like to get my hands on a 60c+ pack to see if it makes a difference. That probably won't happen before winter though. Edited September 29, 2014 by Mgozzz 2 Quote Link to comment Share on other sites More sharing options...
J.A.Son Posted September 29, 2014 Share Posted September 29, 2014 Latest video- http://youtu.be/A9noK35tKro For some reason the car doesn't seem as quick at it was the other day. It is still fast regardless but I think the setup is stressing the batteries at this point. I only have a 35c and a 40c 3s pack at my disposal so I'd like to get my hands on a 60c+ pack to see if it makes a difference. That probably won't happen before winter though. Mike, I don't know about the other day but that seems bloody quick to me! In the absence of a gps, how about chalk marks across gte road ever 25m or so? Using the time signature from the GoPro would give you rough time-distance.. Also, if you think they'd take it, run a set of gymkhana tyres. The blooning will increase the gearing at top end. Awesome!! Quote Link to comment Share on other sites More sharing options...
Mgozzz Posted September 29, 2014 Share Posted September 29, 2014 (edited) Ahh that's a good idea!... I'll have to try it out at some point. So yeah it just doesn't seem to have the punch it had before. The first and second run it seems alright but after that it seems to flatten out. I definitely think it's the batteries. Just think of wheel spinning punch almost all the way up to the top end. It was absolutely crazy lol. Edited September 29, 2014 by Mgozzz Quote Link to comment Share on other sites More sharing options...
rc1987 Posted October 4, 2014 Share Posted October 4, 2014 http://www.msuk-forum.co.uk/gallery/image/30547-/ hello just thought id show off my wr8 intergy piggyback shocks I just purchased what do u think? 1 Quote Link to comment Share on other sites More sharing options...
Mgozzz Posted October 4, 2014 Share Posted October 4, 2014 Neat! What do you think? Do they feel close in spring tension and dampening to the stock shocks? Stiffer? Softer? Shoot some pictures of them mounted up if you can! Quote Link to comment Share on other sites More sharing options...
Syncro Posted October 4, 2014 Share Posted October 4, 2014 Very interested to know how you get on with these. hello just thought id show off my wr8 intergy piggyback shocks I just purchased what do u think? Quote Link to comment Share on other sites More sharing options...
rc1987 Posted October 5, 2014 Share Posted October 5, 2014 Neat! What do you think? Do they feel close in spring tension and dampening to the stock shocks? Stiffer? Softer? Shoot some pictures of them mounted up if you can! Alright mate, from first impressions they feel alot firmer then stock shocks & not as slow on rebound they come pre filled With oil not sure what wtt is in Der, gonna mount dem very soon, I will keep u posted 2 Quote Link to comment Share on other sites More sharing options...
Mgozzz Posted October 5, 2014 Share Posted October 5, 2014 Thanks for the info! That's great. Almost sounds like they went with a higher spring rate... Let us know if it is bouncy! Quote Link to comment Share on other sites More sharing options...
sidewaysjim Posted October 5, 2014 Share Posted October 5, 2014 Might be good for your tarmacmuncher then mike! Quote Link to comment Share on other sites More sharing options...
rc1987 Posted October 5, 2014 Share Posted October 5, 2014 hello guys,here is some pics of my integy piggyback shocks fited plus few other upgrades added,i have still got other upgrades not fited yet will fit them soon when got the time http://www.msuk-forum.co.uk/gallery/image/30553-/ http://www.msuk-forum.co.uk/gallery/image/30552-/ http://www.msuk-forum.co.uk/gallery/image/30551-/ http://www.msuk-forum.co.uk/gallery/image/30551-/ http://www.msuk-forum.co.uk/gallery/image/30550-/ 1 Quote Link to comment Share on other sites More sharing options...
Mgozzz Posted October 6, 2014 Share Posted October 6, 2014 Might be good for your tarmacmuncher then mike! I think they might be too long. I need to find something in the 65-70mm length. I don't think there is really anything out there that will work though so I'd like to make some custom shock towers out of carbon fiber that will allow me to use the stock shocks. It will be an interesting winter project. Quote Link to comment Share on other sites More sharing options...
Leo Posted October 6, 2014 Share Posted October 6, 2014 Got another 2 shells today. 1 Quote Link to comment Share on other sites More sharing options...
Syncro Posted October 6, 2014 Share Posted October 6, 2014 Ker-ching!!!!!! 8) 1 Quote Link to comment Share on other sites More sharing options...
Sonicr360 Posted October 6, 2014 Share Posted October 6, 2014 Same here! Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
sidewaysjim Posted October 6, 2014 Share Posted October 6, 2014 Jealous of all these shells lads. Nice purchases. Anyone made friends with someone from HPI yet so we can get insider info? Lol. Quote Link to comment Share on other sites More sharing options...
Mgozzz Posted October 6, 2014 Share Posted October 6, 2014 Wow Leo! Those are awesome. The more I see them the more I want to get one... 1 Quote Link to comment Share on other sites More sharing options...
Leo Posted October 6, 2014 Share Posted October 6, 2014 You should. I really regret not getting the older KB body now. I've now got 6 WR8 bodies (still sealed) now not including the one on the car which is ready for the bin. 1 Quote Link to comment Share on other sites More sharing options...
sidewaysjim Posted October 6, 2014 Share Posted October 6, 2014 Wow Leo! Those are awesome. The more I see them the more I want to get one... Mike they look awesome. Put your hand in your pocket. But don't forget the wheels. I've got the green shell on a flux and the blue shell on my nitro. Quote Link to comment Share on other sites More sharing options...
rc1987 Posted October 6, 2014 Share Posted October 6, 2014 HELP PLEASE! alright guys need advise asap iv got 2200kv castle motor an not sure about gearing, what pinion and spur would be best coz im out of my depth here guys,still learning http://www.msuk-forum.co.uk/gallery/image/30562-/ Quote Link to comment Share on other sites More sharing options...
Sonicr360 Posted October 7, 2014 Share Posted October 7, 2014 What ESC do you have?? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
rc1987 Posted October 7, 2014 Share Posted October 7, 2014 Mamba monster 2 Quote Link to comment Share on other sites More sharing options...
888racer Posted October 7, 2014 Share Posted October 7, 2014 (edited) HI, Just been given a Team Orion Carbon Pro Lipo, 7.4v 2s 6000 100c, would the WR8 esc and motor take this or is it too much?? Edited October 7, 2014 by 888racer Quote Link to comment Share on other sites More sharing options...
Syncro Posted October 7, 2014 Share Posted October 7, 2014 Although that's a high mah and 'c' rating, as far as I'm aware, the esc and motor combo will only ask for what it needs, if you know what I mean. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.