[NSRCA-discussion] Wheels for skinny pants

Thu Mar 20 19:03:33 AKDT 2008

Thanks very much!!

  Colin.

mike mueller <mups1953 at yahoo.com> wrote:
  OK I've got the dim on the MPI new style wheels. 
17.5mm wide .687 Inches x 65MM or 2.5" in diameter.
Hope this helps, Mike
--- colin chariandy wrote:

> Mike
> 
> DId you get the dim for the wheel?
> 
> Colin
> 
> mike mueller wrote:
> Great point Stuart. I'll keep that in mind. It's
> truely amazing how much lighter you can make a plane
> by paying attention to every component. It really
> adds up. Mike
> 
> Stuart Chale wrote: Just a
> thought on your axles if weight is an issue. Switch
> to aluminum 8-32 bolts. You will save a few grams
> right there and they will likely be strong enough. 
> I started with a steel bolt axle like you did on my
> pinnacle but switched over to the NMP aluminum
> axles. Saved 6 or 7 grams I think. I also switched
> my landing gear mounting bolts to aluminum and saved
> another 15 grams or so (6 bolts). The real amazing
> thing is to compare the weight of a bag of 50 or so
> steel bolts to a bag of aluminum bolts of the same
> size.
> 
> Stuart
> 
> mike mueller wrote: I drill out the axles of
> the MPI's to fit a nylon sleeve (I think it's a 1/4"
> in size) that is as long as the opening inside the
> wheel well. After that I put thick plastic washers
> on these sleeves that to add stability.The washers
> are about 1/2" in diameter and 1/8" thick. When
> everything sandwich's in it keep the wheels from
> wobbling around I use 8-32 stainless bolts for
> axles. I use a wheel pant mounting method that
> allows the axles to go all the way thru the wheel
> pants.
> http://www.rcaerobats.net/Wayne'sWheelpants.htm
> This is the best method I have ever used. By
> mounting this way it keeps the wheel pants from
> flexing in the airstream. Very solid and cheap too.
> I have used the NMP axles and find that they don't
> keep the wheel pants soild enough.
> The trick is to keep the skinny wheels from
> wobbling around. With the tiny axles that they come
> with you'll need to do something like I am. 
> So far so good with this system. I had to do it
> because of weight problems flying Electric. Mike
> 
> colin chariandy wrote:
> Mike, what mod are you applying to the skinny
> MPIs to improve them?
> 
> Colin.
> 
> mike mueller wrote:
> Hey Colin I have a pair. I'll get you the
> dimensions when I get home. They are really nice and
> very light. I still prefer the skinny MPI's with a
> modification. I've had great luck with them flying
> off of a very smooth grass field. Mike
> 
> colin chariandy wrote: 
> Thanks Chad, those look perfect. They need to be
> just under 17mm wide to fit. I hope someone on the
> list has one to maesure.
> 
> Colin.
> 
> Chad Northeast wrote:
> MPI makes a metal hub wheel that is pretty light
> but a little wider than the really skinny ones that
> would probably fit the CARF/ZN wheelpants. Also it
> has a harder rubber ring around it so the soft foam
> does not wear as fast.
> 
> http://www.maxxprod.com/mpi/mpi-29.html
> 
> Maybe someone has a set on the list and can send you
> the width!
> 
> Chad
> 
> ----- Original Message -----
> From: Ron Van Putte 
> Date: Tuesday, March 18, 2008 8:56 pm
> Subject: Re: [NSRCA-discussion] Wheels for skinny
> pants
> To: NSRCA Mailing List
> 
> 
> > I didn't see a response to Colin's request. I
> have some 
> > new MK 
> > (plastic hub) wheels, but none are quite big
> enough. 2.5" 
> > is 
> > approximately 63.5mm. The biggest MK wheel I have
> is 
> > 50mm. I can 
> > measure it, but don't know how much to scale up
> the width 
> > dimension 
> > to represent a 63.5mm wheel.
> > 
> > Ron Van Putte
> > 
> > On Mar 18, 2008, at 8:37 AM, colin chariandy
> wrote:
> > 
> > > Can anyone measure the width of MK and Tetra
> (plastic hub) 
> > wheels, 
> > > 2.5" diameter? I'm trying to find out which
> wheels will fit 
> > into 
> > > the skinny pants that come with the CompARF
> Integral. They 
> > look 
> > > cool...so I would like to try to use them. I
> know the really 
> > thin 
> > > MPI wheels will fit but our local feild tends to
> be soft for 
> > quite 
> > > a while, the thin wheels may dig in.
> > >
> > > Also, where can we find MK wheels in North
> America?
> > >
> > > Thanks all.
> > > Colin
> > _______________________________________________
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