Go Back   Scale 4x4 R/C Forums > In General > Scale 4x4 R/C Official Regional Clubs > London Scale Trail Runners
Make payments with PayPal - it's fast, free and secure!


Reply
 
Thread Tools Display Modes
  #1  
Old 07-10-2012, 01:03 PM
Dready's Avatar
Dready Dready is offline
Bucket List 1) Get a Truck on American TV. Completed
 
Join Date: Sep 2007
Location: London
Posts: 10,351
Member Number: 2380
B/S/T Feedback: (18)
Default The LSTR TTC Challenge Sled!!!

Right I had a few spare minutes today so I knocked up a TTC Challenge Sled.

Rest assured that unladen it weighs 4.5kg!!! Charles losi doesn't stand a chance.
Pics
Better ones later the camera needs charging.
Its work in progress needs a bit of paint but the concept works.
The top part moves up when the sled is pulled forward.




That doesn't look to bad I here you say.
Sized next to a Hilux



There is a couple of things that I need.

Braided Fishing Line. Tough stuff with a high Break rate and no flex.
Also Lead or similar heavy metal the Top part is 130mm by 100mm the Lead Weights need to fit on the top of this.
Reply With Quote
Sponsored Links


The sponsored ad above is only displayed to guests. Creat an account today to remove this ad!
  #2  
Old 07-10-2012, 01:57 PM
foxtrial's Avatar
foxtrial foxtrial is offline
LSTR
 
Join Date: Feb 2011
Location: Beare Green, Surrey
Posts: 941
Member Number: 14525
B/S/T Feedback: (0)
Default

I have both of those, 45lb carp line and some old lead flashing that could be cut/beaten into squares.
are going to make a box for weight?

how much of each are you looking for?
Reply With Quote
  #3  
Old 07-10-2012, 02:07 PM
BigTiny's Avatar
BigTiny BigTiny is offline
Tiny in a big way!
 
Join Date: Jan 2012
Location: Hemel Hempstead
Posts: 264
Member Number: 17034
B/S/T Feedback: (0)
Default

that thing is going to eat alot of motors, gear boxes, diffs and shafts....
Reply With Quote
  #4  
Old 07-10-2012, 02:15 PM
Dready's Avatar
Dready Dready is offline
Bucket List 1) Get a Truck on American TV. Completed
 
Join Date: Sep 2007
Location: London
Posts: 10,351
Member Number: 2380
B/S/T Feedback: (18)
Default

Quote:
Originally Posted by foxtrial View Post
I have both of those, 45lb carp line and some old lead flashing that could be cut/beaten into squares.
are going to make a box for weight?

how much of each are you looking for?
There's a 10mm thick acrylic L shape fitted on top to stack the weight on



Well I just did a Quick test with two house bricks on a path
I got it rolling but couldn't get it anywhere near the top.
SO on dirt with a little gradient we should be ok.
Once no sorry! If you get it to the top the rear wheels lock up and your basically dragging the whole thing.

Traction will be key!!

We also need to thrash out some simple rules.
I was thinking:-

1) Measure a course out say around 15 metres
2) Time each run in the event of a draw (fastest time wins)
3) Sledge must be attached to the Frame ONLY.

Anything else I have forgotten

I'll bring it with me to Docklands on the 21st.
Reply With Quote
  #5  
Old 07-10-2012, 02:25 PM
Darkcrawler6x6's Avatar
Darkcrawler6x6 Darkcrawler6x6 is offline
Call me Snowman!
 
Join Date: Nov 2011
Location: Bushey Herts UK
Posts: 561
Member Number: 16526
B/S/T Feedback: (0)
Default

Oh so do we have to work out something to hook it attach it to the frame?
Reply With Quote
  #6  
Old 07-10-2012, 02:27 PM
Darkcrawler6x6's Avatar
Darkcrawler6x6 Darkcrawler6x6 is offline
Call me Snowman!
 
Join Date: Nov 2011
Location: Bushey Herts UK
Posts: 561
Member Number: 16526
B/S/T Feedback: (0)
Default

Neil that's a nice piece of work. All I am saying is Martin can I have an account?
Reply With Quote
  #7  
Old 07-10-2012, 02:28 PM
Dready's Avatar
Dready Dready is offline
Bucket List 1) Get a Truck on American TV. Completed
 
Join Date: Sep 2007
Location: London
Posts: 10,351
Member Number: 2380
B/S/T Feedback: (18)
Default

Quote:
Originally Posted by Darkcrawler6x6 View Post
Oh so do we have to work out something to hook it attach it to the frame?
You cant attach it to the axle thats not fair.
Has to be frame mounted.

I just wrapped a cord round a rear cross member it worked fine.
If you want to get serious a tow hitch low to the ground will be better.
Reply With Quote
  #8  
Old 07-10-2012, 02:30 PM
[email protected] Chris@docklands is offline
Newbie
 
Join Date: Mar 2012
Posts: 45
Member Number: 17606
B/S/T Feedback: (0)
Default

I have a stopwatch at the track and will get some ground marking paint. Once I know how far it takes to pull the weight all the way to the top of the sled I'll mark out a track. Then it's time for a FULL PULL!
Reply With Quote
  #9  
Old 07-10-2012, 02:37 PM
Dready's Avatar
Dready Dready is offline
Bucket List 1) Get a Truck on American TV. Completed
 
Join Date: Sep 2007
Location: London
Posts: 10,351
Member Number: 2380
B/S/T Feedback: (18)
Default

Quote:
Originally Posted by [email protected] View Post
I have a stopwatch at the track and will get some ground marking paint. Once I know how far it takes to pull the weight all the way to the top of the sled I'll mark out a track. Then it's time for a FULL PULL!
I best make it look pretty then!!
Reply With Quote
  #10  
Old 07-12-2012, 03:54 PM
willkrawl's Avatar
willkrawl willkrawl is offline
Scale the world realism we share
 
Join Date: Jun 2010
Location: surrey
Posts: 2,392
Member Number: 12110
B/S/T Feedback: (0)
Default

neil the sled looks great can't wait to try it out.
if i rig up a chain some how to the wraith would this be ok to use a hitch
Reply With Quote
  #11  
Old 07-12-2012, 04:03 PM
Dready's Avatar
Dready Dready is offline
Bucket List 1) Get a Truck on American TV. Completed
 
Join Date: Sep 2007
Location: London
Posts: 10,351
Member Number: 2380
B/S/T Feedback: (18)
Default

Quote:
Originally Posted by willkrawl View Post
neil the sled looks great can't wait to try it out.
if i rig up a chain some how to the wraith would this be ok to use a hitch
Just not on the axle otherwise fine.
Reply With Quote
  #12  
Old 07-12-2012, 04:04 PM
willkrawl's Avatar
willkrawl willkrawl is offline
Scale the world realism we share
 
Join Date: Jun 2010
Location: surrey
Posts: 2,392
Member Number: 12110
B/S/T Feedback: (0)
Default

no probs
Reply With Quote
  #13  
Old 07-12-2012, 05:14 PM
UK_Andy's Avatar
UK_Andy UK_Andy is offline
www.mishacalvin.com
 
Join Date: Oct 2008
Location: Caterham, Surrey, UK
Posts: 3,322
Member Number: 4544
B/S/T Feedback: (6)
Default

The weight doesnt need to go up hill, it works by being closer to the skid plate, not by being higher
__________________
Willows CTP for all your printing plate needs
www.mishacalvin.com
Reply With Quote
  #14  
Old 07-12-2012, 05:22 PM
Dready's Avatar
Dready Dready is offline
Bucket List 1) Get a Truck on American TV. Completed
 
Join Date: Sep 2007
Location: London
Posts: 10,351
Member Number: 2380
B/S/T Feedback: (18)
Default

Quote:
Originally Posted by UK_Andy View Post
The weight doesnt need to go up hill, it works by being closer to the skid plate, not by being higher
Disagree.

The Weight moving uphill makes it even harder.
Because you have to pull the weight up as well as the weight pushing down.

Makes it doubley Harder.
Reply With Quote
  #15  
Old 07-13-2012, 05:49 PM
northernerbill's Avatar
northernerbill northernerbill is offline
Watch out, you could have somebodies eye with that
 
Join Date: Jan 2012
Location: Brighton, UK
Posts: 359
Member Number: 16923
B/S/T Feedback: (0)
Default

Good work, btw the gradient also ensures its stays in its position, namely flat it could slide forward etc.
__________________

http://www.rcbitz.com
Reply With Quote


Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 05:06 AM.


Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004 - 2019, Scale 4x4 R/C