Re: [TANKS] Spring rates

2014-06-13 Thread Joe Sommer
On Wednesday, June 11, 2014 6:30:35 PM UTC-4, Frank Pittelli wrote: 2X = Soft 3X = Semi-Stiff 4X = Stiff Most men x The remainder of Dr. Pittelli's prior message was censored by Anvilus Smut Removal Effort (ARSE). Our motto - We have

[TANKS] Spring rates

2014-06-11 Thread Don Shankin
Hi guys, I'm curious about what I should expect to be using for springs for my suspension. Are you all balancing the overall effective spring force to the weight of your tank? This seems like something that is just discovered through trial and error, but I'd be interested in what you find works

Re: [TANKS] Spring rates

2014-06-11 Thread Frank Pittelli
Here are my rules of thumb, based on experience with suspensions in the SU-100 (tension springs), Semovente (leaf springs) and Patton (torsion springs). 1) Estimate (or measure) the battle weight of your tank (W). Multiply by two (2) and divide by the number of road-wheel axles (A) to

Re: [TANKS] Spring rates

2014-06-11 Thread Derek Engelhaupt
Franks's formula pretty much works out about right for the KV-2 I have. 12 axles at about 120-140lbs completed weight, and I'm using 30lb. springs. Mine would be on the stiff side of his calculations. I'm also using die springs which don't seem to compress that much in a static state, but seem

Re: [TANKS] Spring rates

2014-06-11 Thread Don Shankin
Thanks, this is exactly what I was looking for. I figured there'd be a difference between the that looks cool and that works well spring rates. I didn't think it'd be a factor of two though. Has anyone pushed their springs past the event horizon? On Wed, Jun 11, 2014 at 3:16 PM, Derek

Re: [TANKS] Spring rates

2014-06-11 Thread Frank Pittelli
2X = Soft 3X = Semi-Stiff 4X = Stiff Most men (and women) prefer stiff ;-) On 6/11/2014 4:25 PM, Don Shankin wrote: I didn't think it'd be a factor of two though. -- -- You are currently subscribed to the R/C Tank Combat group. To post a message, send email to rctankcombat@googlegroups.com

Re: [TANKS] Spring rates

2014-06-11 Thread Michael Butts
Has anyone really pushed the envelope of progressive rate coil springs in a compression style suspension? Mike B On Wed, Jun 11, 2014 at 6:30 PM, Frank Pittelli frank.pitte...@gmail.com wrote: 2X = Soft 3X = Semi-Stiff 4X = Stiff Most men (and women) prefer stiff ;-) On 6/11/2014 4:25