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KarlKani said:
^^^^^^
Click to expand...

Yeah but if nobody ever tries something new, you never find anything better.

Also, I’m not sure the motoholders setup doesn’t flex under my weight too but you just can’t see it because it’s not attached to the tank making the tank move an eighth of an inch at the opposite end of the lever.

We’ll only really know how it is when we get it to track, the Australian guy on here has a fast buddy that seems to like it…we’ll see.
 
Steven31371 said:
All good points to look out for…with a caveat, a fair amount of weight is distributed to the foot pegs when I’m at lean angle, and it’s largely lateral weight on the side of the tank on the unit itself and there doesn’t seem to be any lateral flex.

I only noticed flex when putting all my weight on my ass in the furthest back position in the seat. Something that in active riding at track doesn’t happen that much…still something to think about. I’m also not convinced it’s a bad thing because a little flex in the chassis can be a good thing. I’m very curious to see how feel is affected on track though, as it was setup I got VERY good feel on what the tire grip was doing with the Motoholders and Raceseats.it setup, will be interesting to see how much feel you get through this setup.
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I emailed Rade about the actual useable fuel volume. I'm hoping it's 19L/5 gal as claimed. They actually didn't really know so they said they'd measure the volume of the next one off the mold. I see the flex issue and the heat issue as one. If heat allows that material to flex more then you should add a brace. Flat stock between the tank and their mount (using both mounting points) extending back to the appropriate point under the tank and run a crossbrace. Paint it like the tank and it will disappear. I guess I need to study the material characteristics. May not be able to use this on the street. These bikes transfer a lot of heat into the tank. And the reflective shielding only really changes the time constant not the ultimate temperature.
 
baggerman said:
I emailed Rade about the actual useable fuel volume. I'm hoping it's 19L/5 gal as claimed. They actually didn't really know so they said they'd measure the volume of the next one off the mold. I see the flex issue and the heat issue as one. If heat allows that material to flex more then you should add a brace. Flat stock between the tank and their mount (using both mounting points) extending back to the appropriate point under the tank and run a crossbrace. Paint it like the tank and it will disappear. I guess I need to study the material characteristics. May not be able to use this on the street. These bikes transfer a lot of heat into the tank. And the reflective shielding only really changes the time constant not the ultimate temperature.
Click to expand...

Yeah I’m going to liberally apply some ceramic adhesive heat shield, also I rarely ride it on the street and at the track it’s 20 minute sessions so hopefully less heat sink…curious to find out.
 
Actually the natural melting point is 190 C. Should be OK. There's tons of variants of this, different colors, different fillers etc. All with slightly different characteristics. I'd still make a brace. Repetitive flexing will eventually crack it.
 
Too bad they didn't extend their tank mount backwards and pick up a third point. Looks totally doable from the pictures.
 
baggerman said:
Too bad they didn't extend their tank mount backwards and pick up a third point. Looks totally doable from the pictures.
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Yeah or widen the distance between the two mounting points, though in fairness it’s a track part, and they aren’t going to engineer them for the atypical 240lbs rider…to be clear, it’s a small amount of flex when all of my 240 lbs is on the furthest back part of the seat.

Don’t want to over dramatize it.
 
baggerman said:
Actually the natural melting point is 190 C. Should be OK. There's tons of variants of this, different colors, different fillers etc. All with slightly different characteristics. I'd still make a brace. Repetitive flexing will eventually crack it.
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But do you have practical experience on this???-andyb

I saw the Tm was 190 and 125 was the stable long-term temp. Maybe bond a few layers of carbon to the subframe area would strengthen it. Or maybe extend the brackets.

The Kramer seat/tank is more triangulated with the mounts more vertical so it cantilevers downward force more acutely to the lower mount. The Ducati Rade tank is more cantilevered and that’s why it’s flexing. If you have a little static flex it’ll be more when things forces are dynamic. The heat will also soften the plastic. Hope this isn’t the case and that your weight is concentrated over the bracket and this is a non issue 🤞

IMG_0830.jpeg

IMG_0831.jpeg
 
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I think I'll just weld onto and extend their mount backwards and integrate my bag mounts. If this doesn't hold more gas I'll probably pass. Last trip I ran out of gas twice (the second time by area 51 when I was trying to see how fast it would go sitting upright didn't help). My stock tank only holds 4.05 gal. I don't care what the spec says the first time I pushed it to the gas station about 100 yds away from where I ran out and filled it with the bike straight up and down 4.05. So I'm attempting to stone two birds simultaneously.
 
baggerman said:
I think I'll just weld onto and extend their mount backwards and integrate my bag mounts. If this doesn't hold more gas I'll probably pass. Last trip I ran out of gas twice (the second time by area 51 when I was trying to see how fast it would go sitting upright didn't help). My stock tank only holds 4.05 gal. I don't care what the spec says the first time I pushed it to the gas station about 100 yds away from where I ran out and filled it with the bike straight up and down 4.05. So I'm attempting to stone two birds simultaneously.
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I can’t remember the name of it but there is a Japanese company that makes enduro tanks for these with higher capacity…it’s mentioned in one of these threads.
 
baggerman said:
I think I'll just weld onto and extend their mount backwards and integrate my bag mounts. If this doesn't hold more gas I'll probably pass. Last trip I ran out of gas twice (the second time by area 51 when I was trying to see how fast it would go sitting upright didn't help). My stock tank only holds 4.05 gal. I don't care what the spec says the first time I pushed it to the gas station about 100 yds away from where I ran out and filled it with the bike straight up and down 4.05. So I'm attempting to stone two birds simultaneously.
Click to expand...

Attach a Jerry can to the rear and tap a hole into the back of this tank. Boom extended range
 
So good news, it’s not the seat flexing, when I pulled it off and put it on the floor there is no flex.

The issue is with 4 rubber bushings at the mounting points, they are too soft, and need to be replaced with nylon bushing in my opinion.

The 4 rubber bushing let it cantilever a bit.

Anyone have a good source for nylon or harder plastic bushings?



IMG_0419.jpeg

IMG_0420.jpeg

IMG_0421.jpeg

IMG_0422.jpeg
 
I wonder why they went with rubber instead of plastic or metal? Maybe solid mounting puts too much stress on the holes or a vibration thing. I’m sure there’s a design reason.

Either way grab a rod of Delrin and have a machine shop lathe 4 bushes to the size you need. Prob take them 5 mins.
 
bp_SFV4 said:
Maybe it was intended to solve or prevent another problem? It seems more like an early adopter problem than a poor design.
Click to expand...

I suspect that it wouldn’t be much of an issue for lighter rider. But for me some Dellrin is needed for sure.

Might be able to find what on need on Alibabba or something…will keep you posted.
 
KarlKani said:
if you dare put a Japanese part on a Ducati, ultimate jinx - no victories possible
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OK throw away all your electronics. I promise no significant japanese parts.

Steven31371 said:
So good news, it’s not the seat flexing, when I pulled it off and put it on the floor there is no flex.

The issue is with 4 rubber bushings at the mounting points, they are too soft, and need to be replaced with nylon bushing in my opinion.

The 4 rubber bushing let it cantilever a bit.

Anyone have a good source for nylon or harder plastic bushings?
Click to expand...
Thanks.The rubber allows some compliance so not delrin. Something firmer but not completely stiff like sway bar polyurethane. I'm only about 190 suited so I'm thinking it should be ok. I'll add a brace anyway.
SuperDomestique said:
Attach a Jerry can to the rear and tap a hole into the back of this tank. Boom extended range
Click to expand...
I carry a gal anyway. Sorry I have to reject your gas filled scoot boot concept. I was going to use that spot to carry spare tires...
 

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