IamScotticus Posted November 12, 2025 Posted November 12, 2025 Fuel bladder... A good idea for many live axles with brace welded on, inches away from slicing into the petrol tank.
wdb Posted November 12, 2025 Posted November 12, 2025 A bladder might be bedder, Or it might be badder. Why does it madder.
EdWills Posted November 12, 2025 Posted November 12, 2025 On 11/11/2025 at 10:37 AM, KnifeySpoony said: Talk amongst yourselves. Maybe check with your health professional?
KnifeySpoony Posted November 12, 2025 Author Posted November 12, 2025 Nobody else gets the piss shaken out of them in their 7? Maybe that's just the price of high spring rates.
11Budlite Posted November 12, 2025 Posted November 12, 2025 I have a much bigger problem with my bladder/prostate from MTB-ing than I do from driving my Seven. I guess it would also depend on what seat you have in your Seven. The seat in my 2001 Birkin was very uncomfortable, but the seat in my Caterham fits me almost perfect. I did switch to a Tillett seat over the winter, but I find that surprisingly comfortable as well. I'm running F:225 and R:130 spring rates in my Sigma-powered 310. At 68 years old I've had two previous operations and will probably have to have one more this winter. There's a history in my family, but according to my urologist it's primarily from my long rides on a mountain bike. Even with a really good saddle designed for these issues, I've had to cut back on the length and qty of my rides. Driving the Seven doesn't even come close to the issues I've experienced on a MTB, but YMMV. One thing you don't want to do is delay talking to your Doctor if you're experiencing symptoms. Since you have a 420R, I'm assuming you have the Tillett seats. Do you have the seat pads on them?
KnifeySpoony Posted November 12, 2025 Author Posted November 12, 2025 (edited) I have carbon tillets with the thin pads and they are very comfortable. I don't have any other related medical issues- it's just in the 7. On a typical workday I will pee when I wake up at around 6AM, then have breakfast, including a cup of green tea. I don't pee again typically until noonish. On a Saturday trackday, I will wake up, not eat or drink anything, empty my bladder right before I leave in the 7 at 6AM, , then drive 1 to 1.5hrs to the track and my bladder is somehow BURSTING before I even arrive. Never had it in any other car (even other stiffly sprung cars). Pretty sure it's related to the vibration - certain frequencies of vibration are known to stimulate urine production/bladder activity, and this is even utilized as medical therapy. I've learned to adapt, but it is annoying, and I was just wondering if anyone else had the same effect. Edited November 12, 2025 by KnifeySpoony
Croc Posted November 13, 2025 Posted November 13, 2025 I do find the Tillet seats allow a build of up gasses because of tight ass checks so when I get out of the car I produce quite a few personal backfires. No bladder issues personally as I have been pissing all over people who got in my way at the warehouse today. I think your likely issue is you are getting older like the rest of us and are more sensitive to vibrations. Man is not a camel!
Croc Posted November 13, 2025 Posted November 13, 2025 Maybe this is your issue when you are driving? There was a 1976 song about it. Our cars contribute to the physical effects. Don and the Four Chops
KnifeySpoony Posted November 13, 2025 Author Posted November 13, 2025 I guess at ripe old age of 46 I need to face the music. Maybe trade it in for a lexus crossover.
ashyers Posted November 13, 2025 Posted November 13, 2025 Back when I worked in Formula Atlantic one of our drivers complained that the car would generate certain frequencies that would 'set him free'. Fortunately it was an issue with backfires like Croc mentioned and not something more serious. This post reminded me of that issue. The same driver once came over the radio complaining his rump was burning. Upon further examination (of the car!) we found we were a bit too aggressive with the ride height and the new venue a bit bumpier than expected. Opps! Andy
speedwagon Posted November 13, 2025 Posted November 13, 2025 At 84, I had prostrate cancer about 20 years ago. It was taken care of and gone. But I was left with some limits on bladder and bowel control. Exercises help but with an aging body it takes about 4 hrs daily to retain the ability to walk and not fall. Getting old is the shits, but at least my "give a shiter" also doesn't work either. But I am mostly still here. Poor posture in the seat and weaker lower body muscles, and don't try sex with either a full bladder or bowel. john 1
wdb Posted November 13, 2025 Posted November 13, 2025 Could it be related to the 'bucket-ness' (for lack of a better term) of the seat? Maybe try to lift your butt somehow, seat angle maybe, or a cushion, as an experiment. Also, do you actually pee a lot after the drive, or do you just feel like you have to pee?
KnifeySpoony Posted November 13, 2025 Author Posted November 13, 2025 1 hour ago, wdb said: Also, do you actually pee a lot after the drive, or do you just feel like you have to pee? That's the thing - my bladder is super full and I pee a ton of very dilute urine. So the vibration doesn't just shake the bladder, it shakes the kidneys causing them to produce more urine. I like the idea of a cushion for the drive to the track - it might isolate the higher frequency vibrations. I don't know how much of it is the lower frequency heave that is pretty constant on our local freeways given my high ride frequency in the rear. 1
Frankie Posted November 13, 2025 Posted November 13, 2025 (edited) Is this really a fear? I don't mean to sound negative but do you have some stats to address this problem? I will soon be getting rid of my bladder because of age, and problems with my gas gauge. So if it's a serious problem I won't replace it with a new bladder. Edited November 13, 2025 by Frankie
KnifeySpoony Posted November 13, 2025 Author Posted November 13, 2025 Hmm bladder replacement, I hadn't thought of that.
kayentaskier Posted November 13, 2025 Posted November 13, 2025 Knifey, If you're going to try a pad, you might buy a sheet of SunMate foam. The sheets can be purchased in a variety of thicknesses and densities. SunMate is used in a variety of applications, including seat cushions for wheelchair users and pilot . I used the liquid product to "foam in place" my seat squab, replacing the bottom cushion. In your case you could cut a sheet to sit,recline on during the drive to the track, then take it out when it's not needed. https://sunmatecushions.com/collections/sunmate-orthopedic-cushions/motorcycle-seat-foam 1
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