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steven brock
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« Reply #345 on: March 31, 2013, 12:59:13 PM » |
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steel wasn't invented to make bloody staples with!
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triker_Chewie
Hero Member
Karma: 42
Posts: 1712
west aussie dreamer
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« Reply #346 on: March 31, 2013, 03:10:14 PM » |
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ive got the Big Yella trike plans and they call for 48mm with 3mm wall
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I hate when people compare Lemmy with God, i know he is great but he is not gonna be Lemmy, ever If your Dad hasnt got a beard, you've got two Mums there's no point it lookin' pretty if we can't drive it.
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steven brock
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« Reply #347 on: March 31, 2013, 04:04:39 PM » |
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ive got the Big Yella trike plans and they call for 48mm with 3mm wall
That's what I'm make my frame out of.. Lol |
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steel wasn't invented to make bloody staples with!
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andyrennison
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« Reply #348 on: March 31, 2013, 04:12:05 PM » |
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Hi Steve. 48 mm for the reliant trike frame?
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared
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Olds
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« Reply #349 on: March 31, 2013, 04:56:21 PM » |
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Don't think you will need to go quite this big  Have you seen the weight of the trike ? 730 kg  Would expect a reliant trike to be about 300 kg. |
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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andyrennison
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« Reply #350 on: March 31, 2013, 05:39:58 PM » |
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Mine is quite beefy due to the extra seat. Maybe i should weigh it to bring some science to this  |
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared
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andyrennison
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« Reply #351 on: March 31, 2013, 05:57:14 PM » |
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You been round here weighing my trike ON? Front wheel weight 85.2kg each rear wheel 78.1 kg so total is 241.4 kg. Need to add in 2 seats plus battery and engine water and 5 gallon of petrol plus wiring and lights etc, likely to be in the 300kg region. i am wondering if i could utilise my existing yokes and use 38mm x 3mm cds as the stanchions. Or do i need to go to 2" as Steve suggests? |
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Logged
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared
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steven brock
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« Reply #353 on: March 31, 2013, 07:21:52 PM » |
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Hi Steve. 48 mm for the reliant trike frame?
No my v8 one |
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steel wasn't invented to make bloody staples with!
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Olds
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« Reply #354 on: April 01, 2013, 07:22:03 AM » |
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i am wondering if i could utilise my existing yokes and use 38mm x 3mm cds as the stanchions. Or do i need to go to 2" as Steve suggests?
Unfortunately it's not quite as simple as using the weight of the trike to calculate the tube size. You have to take into consideration the maximum gross weight, the speed, the fork design, even the tyre. One of the biggest factors is going to be the braking forces. With a low speed vehicle, small drum brake in a motorcycle wheel and straight tubes you could possibly get away with 25 x 2 but I wouldn't recommend it. You should however, be able to get a good idea of the required tube size, from the existing stanchions as they were designed to cope with the brake/wheel fitted (assuming your existing front end is from a suitable heavy bike). Long winded way of saying, I Would think 38 x 3 should be ok, depending on design, but it's up to you. |
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« Last Edit: April 01, 2013, 07:40:53 AM by Old Newbie »
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Getting older but no wiser! Just using bigger hammers.
The answer to most problems, fire and lots of it.
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steven brock
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« Reply #355 on: April 01, 2013, 08:21:00 AM » |
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On solid works the basic stress calcs say 38 x3 cds is fine 38 x4 cds is better |
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steel wasn't invented to make bloody staples with!
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andyrennison
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« Reply #356 on: April 01, 2013, 07:40:38 PM » |
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the current stanchions are 38mm and less than 3mm wall thicjness. So I think i will go for the 4mm wall thickness and it should be ok. Well, I will find out hey!
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Logged
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared
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andyrennison
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« Reply #357 on: April 01, 2013, 07:41:24 PM » |
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this is interesting Andy do you have to be a member to read the link,good luck with the front end can't wait to see how it turns out [/quote] Yes, I had to register, took a few hours to be approved. |
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Logged
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared
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andyrennison
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« Reply #358 on: April 06, 2013, 09:41:07 PM » |
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New coil overs arrived for the leading link forks. Looking at them they will look silly on 38mm tubes, so will probably go larger anyway now! Spent the day sat in the garden dressing the welds on the rear sub frame, will carry on tomorrow and take some pics. Also tried out my compressor and spray gun repainting an old wicker chair for SHMBO, all works well, so thats ready for painting up the frame when I finally get to that All in all a good day in the sun |
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Thousands of candles can be lit from a single candle,
and the life of the candle will not be shortened.
Happiness never decreases by being shared
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merv
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« Reply #359 on: April 07, 2013, 08:16:51 AM » |
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the sun always makes one feel better
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Why do every five minute job take all day, and
if it can go wrong it will go wrong
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