....and in dirtbike/motocycling, the low-pressure tire is clamped to the
inside of the rim (a "rimlock") and tightened with a with a simple bolt. as
per:
http://www.motorcycle-superstore.com/2/9/203/4355/ITEM/Motion-Pro-Alloy-Rim-Lock.aspx
Pity there nothing similar for the low pressure Europa wheel.
Cheers,
Pete
A239
On Fri, Jul 15, 2011 at 11:38 AM, Jeff B <topglock@cox.net> wrote:
>
> First, I fly a tri-gear, so take this with a grain of salt. In racing, it
> is common to "screw" the tire to the rim, using short pointed sheet metal
> screw. Would this not be workable in the nomowheel to prevent the tire
> slipping on the wheel?
>
> Jeff - Baby Blue
>
> On 7/15/2011 9:33 AM, h&jeuropa wrote:
>
>> --> Europa-List message posted by:
>> "h&jeuropa"<butcher43@att.**net<butcher43@att.net>
>> >
>>
>> We joined the flat tire mono club this past Tuesday, only we think ours
>> had a different cause, not rubbing of the tube in the tire.
>>
>> We have been doing a lot of training on a hard surface runway. The tire
>> and tube had in excess of 500 landings on it. We thought before Heather
>> flew on Tuesday that the tire looked a little low and thought the same
>> before Jim flew after Heather (she did 7 T/O and ldgs). On Jim's 7th
>> landing, the plane slowed quickly and there was a smell of rubber.
>>
>> When we took the wheel/tire apart we found that the tube was perfect
>> except the valve stem was pulled off. No holes or rub marks on the tube.
>> Tire was damaged with a couple of broken cords and a cut on the outside
>> from the wheel.
>>
>> Our conclusion is that the tire was low (we normally run 18 psi) and over
>> the course of 14 T/O and ldgs with some swerving on the runway, the tire
>> pulled from the bead of the wheel and rotated causing the valve stem to be
>> pulled off.
>>
>> The damaged tire was a US Speciality Tire AIR TRAC size 7.00 x 6 6 ply
>> rating and the tube was a Cheng Sing (we think we got the tube from Europa
>> UK).
>>
>> We were able to get a Goodyear Flight Custom II tire locally and fitted
>> our spare tube that is Chinese and purchased from Wicks Aircraft supply,
>> Part Number TB-MTAT8X6 (tubes with the 90 deg valve stem are not listed on
>> Dresser Tire or ACS websites). The only marking on the tube is "Quality
>> Assured" and some Chinese characters! The new tire seems to have a flatter
>> tread and doesn't bulge as much. Landings yesterday with it on pavement
>> were no different than previously.
>>
>> We always use a lot of talcum when fitting a tube. We inflate a new tube
>> outside the tire first to get out wrinkles. Then we deflate it, talcum it
>> (talcum the tire too), insert into the tire and inflate. Then deflate
>> again, and fit the wheel (usually twice since we forget the spacer!!).
>> Inflate again and deflate again. Finally inflate the final time to 18 psi.
>> Be sure the valve stem is aligned with the red dot on the tire for balance.
>>
>> When we got our Europa wheel, we found the opening for the valve stem was
>> quite rough. We filed and sanded it to make it as large and smooth as
>> possible. We used Scotchbrite to clean the wheel before fitting the new
>> tire and tube. There was a lot of rubber debris on the bead and even inside
>> the wheel.
>>
>> Jim& Heather
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/**viewtopic.php?p=346502#346502<http://forums.matronics.com/viewtopic.php?p=346502#346502>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> -----
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>>
>>
>>
>
>
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