Fat ass compensation

Henrik

I have managed to put on some weight recently. To compensate I am trying to make a carbon rear subframe. My estimate is that I will save app. 3 kilos which compensates to some extent😱
Hopefully it will be ready in time for the spring.

Brgds
Henrik

hauge

Henrik wroteI have managed to put on some weight recently. To compensate I am trying to make a carbon rear subframe. My estimate is that I will save app. 3 kilos which compensates to some extent😱 Hopefully it will be ready in time for the spring. Brgds Henrik

Looks like steel to me.......
I have not forgot you fotpegs.....

Cheers
Thomas

Mr.R

Henrik,
Just cut down on the pies!
I'm buggered if I can see where you'd loose save 3kgs over an SP type alloy subframe?
You'd also loose some more weight (from the bike!) if you put a SP/Corse type adjustable suspension rocker arm on in place of the Strada rocker arm in that picture.

Steve R

Henrik

Mr.R wroteHenrik, Just cut down on the pies! I'm buggered if I can see where you'd loose save 3kgs over an SP type alloy subframe? Steve R

The original (888-Strada) is almost 5 kg and 2kg is a lot of carbon. I will put it on the scale when it is ready.
I don't have an SP type alloy subframe. If I had the only solution would be to cut down on pies😁

Any idea how much saving there is on the rocker arm. I have not bothered to look for an adjustable since I probably would make the bike impossible to ride with to much adjustments done wrong

Brgds
Henrik

jimmi851

Hi Henrik, I put my Sp subframe on the scales and
it weighs in at a whooping 1059 gram😁
/ Jimmi

Henrik

Done

It's finally ready. Weight is 875g including the box for the ECU. The box is an integrated part that gives a lot of the stability from side to side.

If I was going to do it again I would look for some other places for the buckets for crank and coolant ventilation, if that space was used for a cross from side to side it would have been much lighter for the same stability.

Saving is app 4 kg (much easier to cut weight when you start with a strada). This means I don't have to cut down on pies😄

Brgds
Henrik

darkmonster

I am interested 😄
Would you be able to do another one for the beginning of april ? 😁

Henrik

darkmonster wroteI am interested 😄 Would you be able to do another one for the beginning of april ? 😁

I don't know that it is safe until I have used it for a while. Until then it's a no no.

Static load is easy to calculate, but how much more is a jump with the suspension bottoming out?
Those damn fibers all has to be under load for the strength to be utilised. I have tried to lay them out the best I could, but is it good enough?

Sorry, to many ???

Brgds
Henrik

Henrik

It works!

Hi,

The subframe has now been tested for two seasons including four visits in the litter box. During this time I have managed to make waste of:
- 1 piece of leathers
- 1 helmet
- 1 pair of boots
- 2 pairs of gloves
- 1 exhaust pipe
- 2 silencers
- 2 footpegs
- 1 handle bar
- The fairings (x4)
- 1 brake disc rotor
- 2 brake levers
- 1 master cylinder

But the home made rear subframe remains in good shape. So I would say it has been tested and found solid enough if any one would like to copy.

Brgds
Henrik

griff851

Yep well you'd have you'd have to pretty much say that has been a good solid test. Nothing beats actually impact damage to simulate impact damage. 😁

hauge

No problems with TUF then... 😁

Lawson SP3

Very, very cool project, Henrik.