SIP Lambretta Digital Speedo

[shocky]

Yes I did

[Rick]

This maybe a silly question.. Just about to fit the temperture sensors over the plug and hold it in place with a cut section of fuel pipe as advised in scootering but someone has pointed out plugs get hot and fuel pipe melts.. He has a point?

[Shipleystevep]

I did exactly that about 4 months ago with no problems. However I'm not sure the temp reading is much use. Mine reads about 120 f when cruising......when stationary it creeps up a bit and when not running will reach about 180f (with no air cooling). I've been thinking about modding my cylinder head slightly to try the sensor under the plug but not done it yet.

Speedo is a great bit of kit though.

[eden]

the plug rings that come with the sip speedo are shite and the way the sensor connects to them is shite!

[shocky]

This maybe a silly question.. Just about to fit the temperture sensors over the plug and hold it in place with a cut section of fuel pipe as advised in scootering but someone has pointed out plugs get hot and fuel pipe melts.. He has a point?

Did mine like this so farso good as I havent been able to reset my cht from its current static reading of 134 deg I use that as my base setting and it cruises at 194 deg it goes up considerably when stationery
I contacted sip and kose about reseting the cht to zero but as expected ive had no reply its a shame no one else makes a decent headset fitting one

[Rick]

Fitted the speedo at the weekend and it seems spot on... Revs look about right I run agusto 6000 ... What sort of temperture should I be looking for with an Avanti TT3? On a test run it was around 57c stationary it went up

[Shipleystevep]

For an intelligent guy I can be pretty dumb, so be tolerant with this......

I fitted a SIP speedo a while ago and alls good except the speedo drive mechanism causes the sip speedo to behave like a standard lammy speedo. Fluctuates all over the place. So I've opted for the sensor kit. Took me ages to work out how and where to fit the sensor bracket on a standard set up. Finally got it placed on the front forks and with a magnet can get a good reading. Calibrated it with aid of a GPS and it measures speed spot on. Distance though is 4% out to the GPS.
I think the problem is that when I go over uneven surfaces or brake, the magnet moves out of line with the sensor.

So my question is how are you supposed to mount these? My mount is static on the forks but the magnet is on the wheel which moves with suspension.

I can tolerate this but it's really bugging me

[Nerdy Norm]

It could be that it's the GPS that's incorrect, and the speedo's right.

Here are a couple of limitations of GPS:

1. Sample frequency - for example if it samples every 3 seconds and in that time you go from point A to B to C, it will only measure the distance between A and C, even if point B was a detour away from the direct path. The sample frequency can be affected by reception issues.

2. GPS doesn't take hills into account.

[Minority]

For an intelligent guy I can be pretty dumb, so be tolerant with this......

I fitted a SIP speedo a while ago and alls good except the speedo drive mechanism causes the sip speedo to behave like a standard lammy speedo. Fluctuates all over the place. So I've opted for the sensor kit. Took me ages to work out how and where to fit the sensor bracket on a standard set up. Finally got it placed on the front forks and with a magnet can get a good reading. Calibrated it with aid of a GPS and it measures speed spot on. Distance though is 4% out to the GPS.
I think the problem is that when I go over uneven surfaces or brake, the magnet moves out of line with the sensor.

So my question is how are you supposed to mount these? My mount is static on the forks but the magnet is on the wheel which moves with suspension.

I can tolerate this but it's really bugging me

As you surmised, the sensor should really move with the wheel/suspension, not be fixed to the static part of the fork. This may mean fabricating a non standard mounting bracket for the sensor. Do you have a disc or drum front brake?
And as Norm says, maybe the GPS distance measurement has "issues"

[Shipleystevep]

It's a drum brake...

Also the GPS distance reading was greater, hence my conclusions