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What did you do with yer bike today.......

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jpc View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpc Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 19:55
Originally posted by Oafski Oafski wrote:

Managed to pick up a screw in the rear tyre a few days ago. removed it when I got home and effected a repair with an Airpro Repair Kit which uses a sort of red sticky string. I haven't used the Bike since but the tyre hasn't lost any pressure and I wondered if anyone had any experience od how permenant a repair this is. My mate did the last one I had with one of those little black mushroom ones and that proved permenant.

The repair is permanent in my experience, in one case in a hole that took two "strings" to plug.

Tyre specialists often advise to ditch the tyre IMMEDIATELY (& buy a new one), take your pick...
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 01 Nov 2018 at 21:19
Been using those for some years now, never yet had any problem afterwards. You can get different thickness strings.

I was first introduced to that method at a Citroen garage in France when I had a puncture (car). The repair took so little time they wouldn't even take any money from me.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Glawster Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 09:46
Not the best week for me.  The oven's blown up and the shower pump has died, but on the other hand I've got new Gilardoni cylinder kits from HMB Guzzi.
Of course I had to priortise the jobs in order of importance, so I've just unpacked the Gilardonis to find that I have two different kits.  One I measure at 82.3mm (with my cheap plastic vernier) and this one has an inlet valve cutout.  The other kit has a plain piston and measures 82.8mm on the same gauge.  Presumably this is for a V7 or GT.
Waiting to hear from HMB.  I hope he does have a correct replacement.
In the meantime I suppose I'll have to go and buy a new oven...


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oafski Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 11:05
Originally posted by Brian UK Brian UK wrote:

Been using those for some years now, never yet had any problem afterwards. You can get different thickness strings.

I was first introduced to that method at a Citroen garage in France when I had a puncture (car). The repair took so little time they wouldn't even take any money from me.

The repair is permanent in my experience, in one case in a hole that took two "strings" to plug.

Tyre specialists often advise to ditch the tyre IMMEDIATELY (& buy a new one), take your pick..

Many thanks Chaps.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 12:42
Originally posted by Oafski Oafski wrote:

Tyre specialists often advise to ditch the tyre IMMEDIATELY (& buy a new one), take your pick..

I wonder why. Coudn't be anything to do with the greater profit of course.

Daughter had this when she took her 2 year old car in for a service.
Cme back, new tyre required, offside rear can't be repaired and you must have the special tyre specified, £120 please. Took it to tyre man who repaired it no problem. Car has done 16k miles. They also said the auxiliary belt was in need of urgent repair. Another £130 please.
When she said she would get it done if needed elsewhere, they said make sure you get a proper high quality one. That's one which might last more than 2 years and 16k miles?

I could see no problem with the belt. They claimed it was shredding.

That's franchised dealers for you.


Edited by Brian UK - 02 Nov 2018 at 12:47
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote theone&onlymin Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 12:46
My tyre shop says two plugs max is their policy. I don't buy my tyres from them they just fit them.In fairness they explained that you don't know what has happened to the carcass by reaming out the hole for the plug. 

Cheers
Min
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 13:21
That's a bit of a poor show Derek. I hope HMB offer you some recompense.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jerry atric Quote  Post ReplyReply Direct Link To This Post Posted: 02 Nov 2018 at 19:03
Originally posted by Dave P. Dave P. wrote:

That's a bit of a poor show Derek. I hope HMB offer you some recompense.

They might throw in a new shower pump
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Post Options Post Options   Thanks (0) Thanks(0)   Quote nab301 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 00:12
Had a smile on my face all week while commuting on my Breva 750 despite the external temperature display going into ice warning mode most mornings...Shocked
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Glawster Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 08:51
Originally posted by Jerry atric Jerry atric wrote:

Originally posted by Dave P. Dave P. wrote:

That's a bit of a poor show Derek. I hope HMB offer you some recompense.

They might throw in a new shower pump

Big smileBig smile  Yes, I'm not sure if HMB do shower pumps.  I'll ask him.  I got the reply below from Michael Berendt.  Sounds a bit odd to me.  The one without the cutout is definitely a bigger bore.  If I remember correctly the V7 capacity was over 750cc so they reduced it on the sport to be under 750cc for production racing.  Anyway, let's hope he has another correct one.


"i will get back to you monday, we have a holiday here today.
There was two different V7 cylinders years ago. V7 with normal piston V7-sport with the cutout. A year ago, production was reduced to one piston type only, as they are (and always were) interchangeable.
Neither did the V7-sport need the cutout, nor does it make a differenc for a normal V7.
Somehow, old and new stock became mixed... As I said, please wait for monday for me to clear this up and get you a good correct set."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 10:37
It`s not good that they sent out unmatched kits (not least because they`re marked as A and C) and strangely they list the bores for the different models as the same. It will be interesting to hear their response

CHRIS
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpc Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 11:10
It is an odd reply he gave you.
Had a look at the books, seems the V7 went from 703cc (80 mm) to 757cc (83 mm) on the Special, then back to 748cc (82.5 mm) on the Sport, as you say with Prod racing in mind.

The cutouts might be irrelevant, but the domed crown obviously not.
I'm not so sure the ABC markings matter, as long as piston/cylinder pair is matched.
The range from A to C is only 82.500 to 82.518.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 19:30
Originally posted by jpc jpc wrote:


The cutouts might be irrelevant, but the domed crown obviously not.
I'm not so sure the ABC markings matter, as long as piston/cylinder pair is matched.
The range from A to C is only 82.500 to 82.518.


In the interests of balance both pistons are better matched thus the C grade one will be heavier than the A grade albeit marginally, but could induce vibration.

CHRIS
you can`t have any fun in a straight line

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Post Options Post Options   Thanks (0) Thanks(0)   Quote jpc Quote  Post ReplyReply Direct Link To This Post Posted: 03 Nov 2018 at 21:22
I've been supplied sets with different markings.

The pistons were within the 1.5 gr tolerance, I opted not to make a fuss.
You can aim for perfection by grinding a bit from the bottom of the skirt, if you must.
But by then you'd want to check the conrods, tolerance 3 gr...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote johnno Quote  Post ReplyReply Direct Link To This Post Posted: 04 Nov 2018 at 15:39
Took left hand side of engine apart on 650 and got broken piston bits out by taking sump off and putting bike on its side ,I believe its all out after dropping a valve. Head, piston need replacing otherwise seems ok for my needs . Took a ride on  my 750 on country lanes around leics and pretended a police motorcycle rider was behind me and I gave him a running commentary of the ride , I was happy with my riding , don't know about him lol 
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